Active vibration control of waves in simple structures with multiple error sensors

Abstract

<jats:p>A numerical study is carried out to determine the improvement in vibration control of simple structures gained by using two sets rather than one set of error sensors. The structures considered are a beam, a plate, and a cylindrical shell. The control sources are driven to minimize the sum of the mean squared flexural displacement signal from all sensors with the view to reducing downstream vibration transmission. Results show that over a large frequency range there is an overall improvement in downstream attenuation resulting from the introduction of the second set of error sensors for each simple structure.</jats:p>